Search for new thermoelectric materials through exploratory solid state chemistry

Antje Mrotzek; Tim Hogan; Mercouri G. Kanatzidis

Search for new thermoelectric materials through exploratory solid state chemistry

Antje Mrotzek, Tim Hogan, Mercouri G. Kanatzidis

Northwestern University

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

The compound types A_1+xM_3-2xBi_7+xSe₁₄, A_1-xM_3-xBi_11+xSe₂₀, A_1-xM_4-xBi_11+xSe₂₁ and A_1-xM_5-xBi_11+xSe₂₂ (A = K, Rb, Cs; M = Sn, Pb) form from reactions involving A₂Se, Bi₂Se₃,M and Se. The single crystal structures reveal that they are all structurally related so that they all belong to the homologous series A_m[M₆Se₈]_m[M_5+nSe_9+n] (M = di- and trivalent metal), whose characteristics are three-dimensional anionic frameworks with tunnels filled with alkali ions. The building units that make up these structures are derived from different sections of the NaCl lattice. In these structures, the Bi and Sn (Pb) atoms are extensively disordered over the metal sites of the chalcogenide network, giving rise to very low thermal conductivity. These phases are all narrow gap semiconductors with 0.25 < E_g < 0.60 eV and many possess physico-chemical and charge transport properties suitable for thermoelectric investigations.

Original language	English
Pages (from-to)	101-112
Number of pages	12
Journal	Materials Research Society Symposium - Proceedings
Volume	691
Publication status	Published - Jan 1 2002
Event	Thermoelectric Materials 2001-Research and Applications - Boston, MA, United States Duration: Nov 26 2001 → Nov 29 2001

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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@article{854269cfc8c24af2ae008629ccce62ac,

title = "Search for new thermoelectric materials through exploratory solid state chemistry",

abstract = "The compound types A1+xM3-2xBi7+xSe14, A1-xM3-xBi11+xSe20, A1-xM4-xBi11+xSe21 and A1-xM5-xBi11+xSe22 (A = K, Rb, Cs; M = Sn, Pb) form from reactions involving A2Se, Bi2Se3,M and Se. The single crystal structures reveal that they are all structurally related so that they all belong to the homologous series Am[M6Se8]m[M5+nSe9+n ] (M = di- and trivalent metal), whose characteristics are three-dimensional anionic frameworks with tunnels filled with alkali ions. The building units that make up these structures are derived from different sections of the NaCl lattice. In these structures, the Bi and Sn (Pb) atoms are extensively disordered over the metal sites of the chalcogenide network, giving rise to very low thermal conductivity. These phases are all narrow gap semiconductors with 0.25 < Eg < 0.60 eV and many possess physico-chemical and charge transport properties suitable for thermoelectric investigations.",

author = "Antje Mrotzek and Tim Hogan and Kanatzidis, {Mercouri G.}",

year = "2002",

month = jan,

day = "1",

language = "English",

volume = "691",

pages = "101--112",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

note = "Thermoelectric Materials 2001-Research and Applications ; Conference date: 26-11-2001 Through 29-11-2001",

}

TY - JOUR

T1 - Search for new thermoelectric materials through exploratory solid state chemistry

AU - Mrotzek, Antje

AU - Hogan, Tim

AU - Kanatzidis, Mercouri G.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - The compound types A1+xM3-2xBi7+xSe14, A1-xM3-xBi11+xSe20, A1-xM4-xBi11+xSe21 and A1-xM5-xBi11+xSe22 (A = K, Rb, Cs; M = Sn, Pb) form from reactions involving A2Se, Bi2Se3,M and Se. The single crystal structures reveal that they are all structurally related so that they all belong to the homologous series Am[M6Se8]m[M5+nSe9+n ] (M = di- and trivalent metal), whose characteristics are three-dimensional anionic frameworks with tunnels filled with alkali ions. The building units that make up these structures are derived from different sections of the NaCl lattice. In these structures, the Bi and Sn (Pb) atoms are extensively disordered over the metal sites of the chalcogenide network, giving rise to very low thermal conductivity. These phases are all narrow gap semiconductors with 0.25 < Eg < 0.60 eV and many possess physico-chemical and charge transport properties suitable for thermoelectric investigations.

AB - The compound types A1+xM3-2xBi7+xSe14, A1-xM3-xBi11+xSe20, A1-xM4-xBi11+xSe21 and A1-xM5-xBi11+xSe22 (A = K, Rb, Cs; M = Sn, Pb) form from reactions involving A2Se, Bi2Se3,M and Se. The single crystal structures reveal that they are all structurally related so that they all belong to the homologous series Am[M6Se8]m[M5+nSe9+n ] (M = di- and trivalent metal), whose characteristics are three-dimensional anionic frameworks with tunnels filled with alkali ions. The building units that make up these structures are derived from different sections of the NaCl lattice. In these structures, the Bi and Sn (Pb) atoms are extensively disordered over the metal sites of the chalcogenide network, giving rise to very low thermal conductivity. These phases are all narrow gap semiconductors with 0.25 < Eg < 0.60 eV and many possess physico-chemical and charge transport properties suitable for thermoelectric investigations.

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M3 - Conference article

AN - SCOPUS:0036351027

VL - 691

SP - 101

EP - 112

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

SN - 0272-9172

T2 - Thermoelectric Materials 2001-Research and Applications

Y2 - 26 November 2001 through 29 November 2001

ER -